脉冲管制冷机用双段惯性管调相能力模拟及修正方法研究  

Research on Simulation and Correction Method of Phase-shifting Ability of Dual-segment Inertance Tubes for Pulse Tube Cryocooler

作　　者：李姗姗 陈曦 魏玺斌 LI Shan-shan;CHEN Xi;WEI Xi-bin(School of Civil Engineering,Dalian Minzu University,Dalian Liaoning 116650,China)

机构地区：[1]大连民族大学土木工程学院,辽宁大连116650

出　　处：《大连民族大学学报》2022年第5期424-428,共5页Journal of Dalian Minzu University

基　　金：国家自然科学基金项目资助(51906032)。

摘　　要：基于CFD软件开展脉冲管制冷机用双段惯性管调相能力数值模拟研究,与单段惯性管相比,双段惯性管变径更多、长径比变化范围更宽,已有单段惯性管的研究较难直接应用于双段惯性管中。基于此,提出了适用于不同结构尺寸双段惯性管的网格划分方法,并且分别改变第一段及第二段惯性管内径及长度,将模拟值与实验值进行了比较,基于比较结果,总结了双段惯性管调相能力CFD模拟值修正方法。研究结果为CFD软件用于惯性管工程设计提供更加完整的修正依据。Numerical simulation research on the phase-shifting ability of the dual-segment inertance tubes for the pulse tube cryocooler was carried out by the CFD software.Compared with the single-segment inertance tube,the dual-segment inertance tube has two different inner diameters and a wider variation range of the length-diameter ratio.It is difficult for the existing research on the single segment inertance tube to be applied directly to the dual-segment inertance tube.A mesh generation method suitable for dual-segment inertance tubes with different structural sizes was proposed.The inner diameters and lengths for the first and second segments of the dual-segment inertance tubes were changed respectively,and the simulated values were compared with the experimental values.Based on the comparison results,the correction method of the CFD simulated values for the phase-shifting ability of the dual-segment inertance tube was summarized,which provided a more complete correction basis for the CFD software to be used in the inertance tube engineering design.

关 键 词：脉冲管制冷机 双段惯性管 CFD软件 修正方法 

分 类 号：TB651[一般工业技术—制冷工程]